$145 Cheap Flights from Eugene (EUG) to Ontario Intl. Airport (ONT)
Popular airlines from Mahlon Sweet Field Airport (EUG) to Ontario Intl. Airport (ONT)
Alaska AirlinesAlaska Airlines
DeltaDelta
Southwest AirlinesSouthwest Airlines
UnitedUnited
American AirlinesAmerican Airlines
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Cheap Flights from Eugene to Ontario (EUG-ONT)
Alternative airports near Ontario
Prices were available within the past 7 days. Prices and availability are subject to change.
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Eugene (EUG) to Ontario (ONT) at a glance
Travel between Eugene (EUG) and Ontario (ONT) with a range of airlines serving this domestic short-haul route. Explore your options for flights from Eugene and find the best match for your budget and schedule, whether you prefer full-service or low-cost carriers. As you plan your visit to Ontario’s iconic attractions and neighborhoods, consider the available Eugene to Ontario flights and compare airfare to ensure a smooth travel experience.
- Fastest flight duration: around 3h 30m non-stop
- Route distance: roughly 800 miles (1,290 km)
- Flights per week: around 11 departures on average
- Typical fares (one-way): economy tickets often range from $100–$425, depending on seasonality and how far ahead you book
Flights from Eugene Airport (EUG) to Los Angeles - Ontario International Airport (ONT)
According to recent traveler bookings, the top airlines flying from Eugene to Ontario are favored for both one-stop and non-stop options. Many passengers opt for convenient layovers at Seattle-Tacoma International Airport (SEA, approximately 1 hour and 15 minutes), San Francisco International Airport (SFO, about 45 minutes), and Sacramento International Airport (SMF, roughly 55 minutes). These choices allow you to balance price, total travel time, and cabin class, ensuring you find the itinerary that best suits your needs.
- Southwest Airlines: As a budget-friendly airline, Southwest provides both non-stop and one-stop flights, with one-way prices generally between $100 and $450. It constitutes about 38% of departures on this route, featuring a typical in-flight duration of 3 hours and a total travel time of around 4 hours and 15 minutes.
- Alaska Airlines: This full-service airline offers one-stop options, with one-way fares typically falling between $100 and $405. Alaska Airlines makes up approximately 21% of departures along this route, with an in-flight time of 3 hours and an overall journey time of about 4 hours and 15 minutes, including layover time.
- United: Another full-service provider, United Airlines offers one-stop service and has one-way tickets that usually range from $110 to $425. It accounts for roughly 21% of flights on this route, with an in-flight duration of 3 hours and a total journey time close to 4 hours and 15 minutes, factoring in layovers.
- Delta: Delta Airlines, also a full-service carrier, provides one-stop service with one-way fares typically ranging from $100 to $495. It comprises about 14% of departures on this route, with a flight time of 3 hours and a total travel duration of approximately 4 hours and 15 minutes, including any layover.
- American Airlines: This full-service airline offers one-stop routes, with one-way prices generally between $110 and $345. American Airlines represents around 6% of the departures on this route, featuring an in-flight duration of 3 hours and an overall journey time nearing 4 hours and 15 minutes, including layover periods.
Travelers can enhance their journey from Eugene to Ontario by upgrading their flight. Both United and Delta provide first-class service for this route.
Best time to fly from Eugene (EUG) to Ontario (ONT)
The most popular months for travelers flying from Eugene to Ontario are March, April, and June, when peak temperatures in Ontario reach up to 69.8°F in June. If you prefer quieter travel, consider October, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 69.6°F. For better deals, May usually offers the lowest average one-way fare around $185. Flight availability peaks in June, with approximately 14 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 8 flights per week.
- Cheapest time to fly: May usually offers good deals with average one-way fare around $185, roughly 19% cheaper than the yearly average.
- Another budget-friendly time to fly: January typically offers an average one-way fare of around $207.
- Most flight options: June has the highest number of flights from Eugene to Ontario, with approximately 14 flights per week, giving you more flexibility in scheduling your trip.
| Month | Temperature | Demand | Weekly Flights | Average one-way Fare |
| January | 56.3°F (13.5°C) | Average | 10 | $207 |
| February | 56.7 °F (13.7°C) | Average | 8 | $216 |
| March | 59.0°F (15.0°C) | Moderately High | 12 | $282 |
| April | 62.6°F (17.0°C) | Moderately High | 10 | $218 |
| May | 65.3°F (18.5°C) | Average | 12 | $185 |
| June | 69.8°F (21.0°C) | Moderately High | 14 | $219 |
| July | 74.3°F (23.5°C) | Moderately Low | 9 | $254 |
| August | 75.7°F (24.3°C) | Moderately Low | 10 | $267 |
| September | 75.0°F (23.9°C) | Average | 13 | $223 |
| October | 69.6°F (20.9°C) | Moderately Low | 11 | $235 |
| November | 62.6°F (17.0°C) | Average | 12 | $255 |
| December | 55.9°F (13.3°C) | Average | 13 | $214 |
*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.
Alternative routes from Eugene (EUG) to Ontario (ONT)
- North Bend to Ontario (OTH-ONT): The Southwest Oregon Regional Airport (OTH) is located approximately 71 miles from Eugene Airport (EUG). One-way economy ticket prices on this route generally range from $160 to $375, influenced by the season and how early you book. Typically, passengers can expect one-stop flights, with the majority of connections occurring through San Francisco International Airport (SFO). United Airlines is the primary carrier operating on this route.
- Eugene to Orange County (EUG-SNA): John Wayne Airport (SNA) is about 31 miles from Los Angeles - Ontario International Airport (ONT). One-way economy fares for this route usually fall between $100 and $375, depending on the time of year and when tickets are purchased. This route offers both non-stop and one-stop flights, with common layovers at Seattle - Tacoma International Airport (SEA) and San Francisco International Airport (SFO). Major airlines for this journey include low-cost carrier Southwest Airlines and Alaska Airlines, with business and first-class service also available.
How to find the best prices for flights from Eugene (EUG) to Ontario (ONT)
Getting some of the best deals on flights from Eugene to Ontario is all about timing and flexibility. Here are some key tips to help you save:
- Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which aligns with when most travelers make their reservations. Morning departures from 5 am to 12 pm often have lower prices, while afternoon flights from 12 pm to 6 pm are more popular. Additionally, flying on Tuesday generally offers better prices, even though Friday is the busiest travel day.
- Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
- Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
- Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
- Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
- Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at Los Angeles - Ontario International Airport from Eugene Airport
Ontario welcomes travelers from Eugene with a range of transport options based on price, convenience, and proximity. Here's how to reach Ontario efficiently:
- Hotel transfer: Transfers offer a convenient way to reach your hotel in Ontario, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
- Car rental: Renting a car from Los Angeles - Ontario International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Los Angeles - Ontario International Airport on Expedia.
- Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
- Public transportation: From Ontario International Airport, Panama City Seaport, a seaport, is located about 1.6 miles away by car, while Rancho Cucamonga Station, a train station, is approximately 3.7 miles from the airport, also reachable by car, providing convenient options for onward travel.
Eugene to Ontario Intl. Airport Flights
The cheapest times to fly from Eugene to Ontario Intl. Airport
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Eugene to Ontario Intl. Airport are during the month of September. You can find some of the cheapest flights from Eugene to Ontario Intl. Airport with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Eugene to Ontario Intl. Airport
Sunday is one of the best days to book for cheap flights from Eugene to Ontario Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Eugene to Ontario Intl. Airport
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Eugene to Ontario Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from $145 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Eugene to Ontario Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Eugene to Ontario Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Frequently Asked Questions
How much does a flight from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) cost?
You can find cheap one-way flights from $145 and cheap return flights $282 Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) with Expedia. One-way flights generally range between $165 and $1118, and roundtrip flights usually range from $319 to $1025. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The cheapest month to fly from EUG to ONT is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Enter EUG to ONT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Southwest Airlines is one of the cheapest airlines offering connecting flights from Mahlon Sweet Field (EUG) to Los Angeles - Ontario Intl. (ONT), with round-trip tickets starting from around $634 with a layover in San Diego Intl. (SAN). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
To find a cheap flight from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The earliest flight from Mahlon Sweet Field (EUG) to Los Angeles - Ontario International Airport (ONT) usually leaves at around 5:00 AM, operated by Alaska Airlines. This seasonal service is available in October, giving you a great opportunity to start your day early in Ontario. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The most popular departure times for flights from Eugene, OR (EUG) to Ontario, CA (ONT) are from noon to 3pm. About 26% of passengers prefer this time window. Many major carriers, including Southwest Airlines and Alaska Airlines, offer flights during this window. This timing works well because it gives you a relaxed morning before heading to your destination.
How long does it take to fly from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Flying from EUG to ONT with a connection usually takes about 4 hours, traveling roughly 757 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
First class seats are offered on the EUG to ONT route. First class cabins are available on:
- Delta Air Lines
- American Airlines
- United Airlines
How do I earn miles on a Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia?
It's easy to earn miles on a Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.
*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Ontario from Mahlon Sweet Field (EUG)?
From Mahlon Sweet Field (EUG), you can fly into Los Angeles - Ontario Intl. (ONT) to reach Ontario. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), San Diego Intl. (SAN) before reaching Ontario. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute?
Typically, booking a last minute flight from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package?
Securing a Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) Los Angeles Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
If you booked your Eugene, OR (EUG) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.
Travel information
Origin airport | Mahlon Sweet Field Airport |
|---|---|
Destination airport | Ontario Intl. Airport |
Distance | 757 miles away |
Airlines serving | Alaska Airlines, Delta, Southwest Airlines, United, American Airlines |
Popular airline | Alaska Airlines |
Roundtrip price | $282 |